APA (7th ed.) Citation

Collins, R. O. (1971). Land beyond the rivers: The southern Sudan, 1898-1918. Yale University Press.

Chicago Style (17th ed.) Citation

Collins, Robert O. Land Beyond the Rivers: The Southern Sudan, 1898-1918. New Haven: Yale University Press, 1971.

MLA (9th ed.) Citation

Collins, Robert O. Land Beyond the Rivers: The Southern Sudan, 1898-1918. Yale University Press, 1971.